Appendix B Power Consumption Current Consumption and Power Dissipation
3BSE 027 941 R301 203
Maximum current of the +24V supplied to the CPU (incl. ModuleBus and CEX-
bus) is shown in Table 66 on page 203:
Due to transfer or conversion losses in the CPU when full current supply to
ModuleBus and CEX-bus is utilized, the CPU power dissipation increases by 5W in
addition to the values given in Table 64 on page 202.
Table 65. CPU Current Supply to CEX-bus and ModuleBus
Bus +5V +24V
ModuleBus max. 1.5 A
(1)
(1) Corresponds to additional 0.5 A on +24 V.
max. 1.0 A
CEX-bus Not Applicable max. 2.4 A
Table 66. Maximum Current Supply to CPU incl. ModuleBus and CEX-bus (24 V)
CPU Maximum Supply Current
PM856 4.2 A
PM860 4.2 A
PM861 (single) 4.3 A
PM861 (redundant pair) 3.3 A (no ModuleBus)
PM864 (single) 4.4 A
PM864 (redundant pair) 3.4 A (no ModuleBus)
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